MAX194 datasheet(2/24 Pages) MAXIM

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14-Bit, 85ksps ADC with 10µA Shutdown

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VDDD = VDDA = +5V, VSSD = VSSA = -5V, fCLK = 1.7MHz, VREF = +5V, TA = TMIN to TMAX, unless otherwise noted. Typical

values are at TA = +25°C.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

VDDD to DGND .....................................................................+7V

VDDA to AGND......................................................................+7V

VSSD to DGND.........................................................+0.3V to -6V

VSSA to AGND .........................................................+0.3V to -6V

VDDD to VDDA, VSSD to VSSA ..........................................±0.3V

AIN, REF ....................................(VSSA - 0.3V) to (VDDA + 0.3V)

AGND to DGND ..................................................................±0.3V

Digital Inputs to DGND...............................-0.3V, (VDDA + 0.3V)

Digital Outputs to DGND............................-0.3V, (VDDA + 0.3V)

Continuous Power Dissipation (TA = +70°C)

Plastic DIP (derate 10.53mW/°C above +70°C) ............842mW

Wide SO (derate 9.52mW/°C above +70°C)..................762mW

Ceramic SB (derate 10.53mW/°C above +70°C)...........842mW

Operating Temperature Ranges

MAX194_C_E ........................................................0°C to +70°C

MAX194_E_E .....................................................-40°C to +85°C

MAX194_MDE..................................................-55°C to +125°C

Storage Temperature Range .............................-65°C to +160°C

Lead Temperature (soldering, 10sec) .............................+300°C

16(tCLK)

Unipolar

MAX194B, VREF = 4.75V

MAX194A, VREF = 4.75V

MAX194A

MAX194B

MAX194A, VREF = 4.75V

VSSA = -5.25V to -4.75V, VREF = 4.75V

MAX194B, VREF = 4.75V

VDDA = 4.75V to 5.25V, VREF = 4.75V

CONDITIONS

MHz

1.7

fCLK

Clock Frequency

(Notes 2, 3)

µs

9.4

tCONV

Conversion Time

-90

Peak Spurious Noise

-90

THD

Total Harmonic Distortion

(up to the 5th harmonic)

VREF

Input Range

Power-Supply Rejection

Ratio (VDDA and VSSA only)

LSB

±1

DNL

Differential Nonlinearity

Bits

RES

Resolution

ppm/°C

0.1

Full-Scale Tempco

LSB

±2

Unipolar Full-Scale Error

±1

Unipolar/Bipolar Offset Tempco

ppm/°C

0.4

±1⁄2

LSB

±1

INL

Integral Nonlinearity

±1

LSB

±2

Unipolar/Bipolar Offset Error

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

Unipolar

250

Input Capacitance

SINAD

Signal-to-Noise plus Distortion

Ratio

MHz

fSCLK

Serial Clock Frequency

Bipolar

125

-VREF

VREF

MAX194B, VREF = 4.75V

MAX194A, VREF = 4.75V

LSB

±4

Bipolar Full-Scale Error

±2

ACCURACY (Note 1)

ANALOG INPUT

DYNAMIC PERFORMANCE (fs = 85kHz, bipolar range AIN = -5V to +5V, 1kHz) (Note 1)

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